1. SDSS Collaboration, M. Tegmark, et al., Phys. Rev. D 74, 123507 (2006) [astro-ph/0608632]
2. C.L. Bennett, et al., Astrophys. J. 464, L1 (1996) [astro-ph/9601067]
3. Supernova Search Team Collaboration, A.G. Riess, et al., Astron. J. 116, 1009 (1998) [astro-ph/9805201]
4. Supernova Cosmology Project Collaboration, S. Perlmutter, et al., Astrophys. J. 517, 565 (1999) [astro-ph/9812133]
5. E.W. Kolb, M.S. Turner, The Early Universe (Addison-Wesley, 1990)